EstreluStarting Solids Tracker with the 3-Day Rule
Estrelu is a starting solids tracker for parents introducing first foods. You log each new food, flag allergens and record any reaction, with an optional 3-day rule that spaces new foods out. Then you can see which food came before which reaction. It runs in your browser, works offline, and has no ads.
The rash after lunch
Your baby tried egg on Monday, peanut on Tuesday and strawberries this morning. Now there's a rash on the cheek, and you're scrolling through photos trying to remember what came first. Estrelu keeps the order for you, so the conversation with your pediatrician starts from facts.
How the solids tracker works
- Turn on the 3-day rule if you want it. Estrelu then suggests one new food, followed by three days of watching before the next.
- Log each food. Add what your baby tried. Common allergens are flagged.
- Record any reaction. Note what you saw and when.
- See the link. The "food and reaction" view shows which foods came before a reaction, so the pattern is easy to spot.
- Bring it to the doctor. Food and reaction notes are part of your log, ready for the next visit.
A typical notes app vs Estrelu
| Usually | In Estrelu |
|---|---|
| A list of foods in a notes app | Each new food logged with the date |
| Allergens mixed in with everything else | Allergens flagged |
| Reactions written down without context | Reactions linked to the foods before them |
| You count three days in your head | An optional 3-day rule built in |
| Separate apps for solids and milk feeds | Solids, breast and bottle feeds in one log |
What it's based on and what it doesn't do
Guidance on starting solids varies. The WHO and the NHS point to around 6 months of age (WHO, NHS). The AAP suggests introducing a new single-ingredient food every 3 to 5 days (AAP). The NHS says foods with allergens, such as peanuts, eggs, gluten and fish, can be introduced from around 6 months, one at a time and in small amounts, so you can spot any reaction. That's why the 3-day rule in Estrelu is an option, not a requirement. Read more about it in our guide to the 3-day rule for starting solids.
Start with small tastes. If your baby shows no signs of intolerance or allergic symptoms, the amount can gradually be increased.
What Estrelu does not do:
- It does not tell you when your baby is ready for solids.
- It does not suggest menus, portions or recipes.
- It does not diagnose food allergies or tell you whether a reaction is serious.
Milk feeds are still part of the picture. Keep logging them in the baby feeding tracker, and share foods and reactions through the doctor visit summary.
When to call your pediatrician
Talk to your pediatrician before you start solids, especially if your baby has eczema or a known food allergy. Call your doctor if you notice a rash, vomiting or other changes after a new food. Call 911 right away if your baby has trouble breathing, wheezing, swelling of the tongue or throat, or becomes floppy or pale. The NHS calls anaphylaxis a medical emergency (NHS).
Estrelu is not a medical device. It does not diagnose, calculate doses or replace advice from your doctor.
How to start
- Open Estrelu in your phone browser. You don't need the App Store or Google Play.
- Enter your email and the code we send you. There is no password.
- Add Estrelu to your home screen: on Android tap "Install", on iPhone tap "Share" and "Add to Home Screen".
After the first visit the app works offline.
One subscription per family
The first 5 days are free and we don't ask for a card. After that: $4.99 a month, $44.99 a year (instead of $59.88, 25% off), or $79 once for lifetime. Every plan includes every feature, with any number of adults and up to four babies. Paying in USDT is 10% cheaper.
Your data
Your logs are saved on your phone and synced through our server with the whole family. You can export them to JSON or CSV and delete them in settings. Symptom photos stay on your phone only. Estrelu has no ads and no third-party trackers. Privacy policy
Frequently asked questions
- What is the 3-day rule for starting solids?
- It means offering one new food, then watching for three days before adding another. In Estrelu it's optional. The AAP suggests a new single-ingredient food every 3 to 5 days.
- Can I turn the 3-day rule off?
- Yes. It's an option. Some guidelines don't require a set gap between new foods, so follow your pediatrician's advice.
- How do I track allergens?
- Allergens are flagged in your food list. When you log a reaction, Estrelu shows which food came before it.
- Does Estrelu tell me when to start solids or what to feed?
- No. It doesn't give a feeding plan or menu. Talk to your pediatrician about when and how to start solids.
- Does the solids tracker work offline?
- Yes. After the first visit, Estrelu works without internet, and entries sync with your family once you're back online.
Sources
- AAP HealthyChildren: Starting Solid Foods healthychildren.org
- NHS: Baby's first solid foods nhs.uk
- NHS: Anaphylaxis nhs.uk
- WHO Guideline for complementary feeding of infants and young children 6–23 months (2023) who.int
- AAP HealthyChildren: When to Introduce Egg, Peanut Butter & Other Common Food Allergens to a Baby healthychildren.org
Try Estrelu
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Read next
- The 3-day rule for starting solids: how long to wait between new foodsShould you wait 3 days between new foods when starting solids? What the AAP, NHS, WHO and ESPGHAN say, when waiting helps, and how to keep a simple food log.
- Baby Feeding Tracker: Log Breast, Bottle and Diapers in One TapLog breast, bottle and diapers in one tap with Estrelu, a baby feeding tracker that runs in your browser, works offline and supports oz. No app store, no ads.
- Baby Log for Pediatrician VisitsTurn 7, 14 or 30 days of feeds, sleep and diapers into a pediatrician summary, plus your question list and appointment reminders. Offline, in your browser.